How to effectively treat hepatitis syndrome and improve oxygenation issues?

Infant hepatitis syndrome, caused by various etiologies in infants under one year old (including newborns), primarily manifests as jaundice, liver function impairment, and enlargement of the liver or spleen. The causes are complex, including viral infections, congenital metabolic disorders, and intrahepatic or extrahepatic bile duct abnormalities. Treatment is challenging, and diagnosis requires consideration of multiple factors.